While likely a large number to you and me, we are talking about a corporation that claims 120 billion in sales a year. That is less than a single days profits. Not nearly punitive enough to prevent this behavior in the future.
Huh. Well, I think we're just going to have to disagree on that one. While some lies are worse than others (and I suppose I can think of lies that might warrant the astronomical fine you propose), this particular 'lie'--marketing a data plan as unlimited when speeds were in fact throttled when you exceed a certain monthly cap--arguably in violation of a brand new rule doesn't seem nearly serious enough to warrant the huge fine you're talking about.